前缸体件的数控加工中心专用夹具设计

针对某石化设备上前缸体件的工序集中加工要求,提出设计一种数控加工中心专用夹具装置.根据加工工序顺序优先原则,分析前缸体件首道加工工序问题,提出以工件外圆柱面为粗基准代替传统镗削为首道工序的平面粗基准,利用六点定位原理的完全定位方案,设计一套专用V形块定位的夹具装置,保证工件能正确装夹在数控加工中心机床上,完成工件平面及其上螺纹孔面的加工.该夹具装置实现了大规模定制生产需求,提高了数控加工能力.

制动分泵缸体件车镗组合夹具设计

针对某汽车制动分泵缸体件数控车镗加工装夹问题,提出采用一种车镗组合夹具设计方法,分析了分泵缸体件数控车镗加工装夹定位和夹紧过程,并通过UG软件虚拟装配验证此装夹的准确性和正确性,为企业成功设计了一套蓝新特孔系组合夹具装置。

柴油机六缸缸体、缸盖合件清洁度检测方法研究

通过取样、过滤、烘干、称重等步骤,采用称重法和颗粒尺寸测量法对六缸缸体合件、缸盖合件的主副油道、燃烧室和气道以及水道清洁度进行检测的方法,为大功率柴油机组装过程中清洁度控制提供技术依据。

Work characteristic analysis of single-rod symmetric cylinders

Hydraulic cylinders are divided into single-rod asymmetric cylinders and double-rod symmetric cylinders. The single-rod asymmetric cylinder has the advantages of small size and simple structure,but its speed characteristic is not symmetric. The double rod symmetric cylinder has the characteristic of symmetric speed,but it cannot be used in some special occasions. In this paper,one special hydraulic cylinder,a single-rod symmetric cylinder,is developed. Firstly,characters of this type of cylinder are introduced. Then,the system model is constructed by using one software which is Simulation X. Moreover,one single rod asymmetric cylinder is designed and the test rig using the symmetric valve to control single-rod symmetric or asymmetric cylinder is constructed. Both of the simulation and experimental results show that the symmetric valve control single-rod symmetric cylinder servo system is of symmetric speed characteristic,which can be used in practical occasion.